für me, in Germany, the Thai embassy was happy only to see a confirmation of my monthly income. They are not interested were or which bank I put it in. Ask them if that is also ok for them.
I am also using rebated staff stby tickets, never had problems into Thailand..neither with airline nor immigration as I am eligible to visa exempt. Just in case- i always have an backup rebate ticket and always keep an print out of my itinerary/listing. For India , as example where i need a visa i do need a confirmed booking !